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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
* Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "RenderPart.h"
#include "Frame.h"
#include "FrameView.h"
#include "HTMLFrameElementBase.h"
#include "PluginViewBase.h"
#include "RenderView.h"
namespace WebCore {
RenderPart::RenderPart(Element* node)
: RenderWidget(node)
{
setInline(false);
}
RenderPart::~RenderPart()
{
clearWidget();
}
void RenderPart::setWidget(PassRefPtr<Widget> widget)
{
if (widget == this->widget())
return;
RenderWidget::setWidget(widget);
// make sure the scrollbars are set correctly for restore
// ### find better fix
viewCleared();
}
void RenderPart::viewCleared()
{
}
#if USE(ACCELERATED_COMPOSITING)
bool RenderPart::requiresLayer() const
{
if (RenderWidget::requiresLayer())
return true;
return requiresAcceleratedCompositing();
}
bool RenderPart::requiresAcceleratedCompositing() const
{
// There are two general cases in which we can return true. First, if this is a plugin
// renderer and the plugin has a layer, then we need a layer. Second, if this is
// a renderer with a contentDocument and that document needs a layer, then we need
// a layer.
if (widget() && widget()->isPluginViewBase() && static_cast<PluginViewBase*>(widget())->platformLayer())
return true;
if (!node() || !node()->isFrameOwnerElement())
return false;
HTMLFrameOwnerElement* element = static_cast<HTMLFrameOwnerElement*>(node());
if (Document* contentDocument = element->contentDocument()) {
if (RenderView* view = contentDocument->renderView())
return view->usesCompositing();
}
return false;
}
#endif
}
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